ATLAS is an approach for the automatic generation and optimization of
numerical software. Currently ATLAS supplies optimized versions for the
complete set of linear algebra kernels known as the Basic Linear Algebra
Subroutines (BLAS), and a subset of the linear algebra routines in the
LAPACK library.

The libraries in this package are built without any processor extension
instructions, and should run on all processors of this general
architecture, albeit less than optimally.

On some architectures, multiple binary packages are provided to take
advantage of certain commonly available processor instruction set
extensions. The instruction extension set used is indicated in the
package name, with 'base' denoting no extensions. In general, you
will obtain the best performance by installing the package with the
most advanced instruction extension set your machine is capable of
running.

/usr/share/doc/libatlas3gf-base/README.Debian.gz

atlas for Debian
----------------------
Old debconf information
------------------------
Certain information regarding atlas has been removed from its debconf
notes and is now provided here:
Directory layout for atlas libraries
These atlas packages provide a number of static and shared libraries
optimized for commonly found hosts. The packages will configure your
runtime linker to use the v
more»